ADA4522-2ARMZ Description

The ADA4522-2ARMZ is a dual channel, a zero-drift op amp with low noise and power, ground sensing inputs, and rail-to-rail output, optimized for total accuracy over time, temperature, and voltage conditions. The wide operating voltage and temperature ranges, as well as the high open-loop gain and very low dc and ac errors, make the devices well-suited for amplifying very small input signals and for accurately reproducing larger signals in a wide variety of applications.

ADA4522-2ARMZ Features

Low offset voltage: 5 µV maximum

Extremely low offset voltage drift: 22 nV/°C maximum

Low voltage noise density: 5.8 nV/√Hz typical

  -117 nV p-p typical from 0.1 Hz to 10 Hz

Low input bias current: 50 pA typical

Unity-gain crossover: 3 MHz typical

Single-supply operation: input voltage range includes ground and rail-to-rail output

ADA4522-2ARMZ Applications

Inductance, capacitance, and resistance (LCR) meter/ megohmmeter front-end amplifiers

Load cell and bridge transducers

Magnetic force balance scales

High-precision shunt current sensing

Thermocouple/resistance temperature detector (RTD) sensors

Programmable logic controller (PLC) input and output amplifiers